Bambang Hendro Sunarminto
Department of Soil Science, Faculty of Agriculture, Gadjah Mada University, Yogyakarta

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DETEKSI DAN PENGHITUNGAN KERAPATAN INOKULUM Phytophthora capsici DALAM TANAH DENGAN MENGGUNAKAN UMPAN DAUN LADA BANDE, LA ODE SANTIAJI; HADISUTRISNO, BAMBANG; SOMOWIYARJO, SUSAMTO; SUNARMINTO, BAMBANG HENDRO
Jurnal Agroteknos Vol 4, No 3 (2014)
Publisher : Jurnal Agroteknos

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Abstract

Phytophthora capsiciis a causal agent for footrot disease in pepper and classified as a soil-borne pathogen. The inoculums of P. capsici in the soilis difficultto detect. The dynamics of P. capsici population in the soil is frequently and rapidly fluctuates and hard to detect, causing the pathogen to produce disease rapidly. The aimsof this research were todetect the pathogen P.capsici using black pepper leaf baiting and to quantify the inoculum of the pathogen P.capsici in the soil belonging to several disease intensities of the black pepper foot rot in the field. The first experiment: detecting the pathogen P. capsici using black pepper leaf baiting in the soil artificially infested using several sporangia, anda second experiment: quantification of propagul of the P.capsici in various categories of intensity on the black pepper foot rot disease in the field. The research results showed that the black pepper leaf baiting could be used to detect the existence of the propagul of P.capsiciin the soil artificially infested in various densities of sporangia.  The increase in disease intensity occurred in parallel with the greater density of P. capsici inocula in soil. The density of P. capsici inocula in the soil tended to decline when the disease intensity reached the highest level.
Correlation of Growth Parameters with Yield of Two Cassava Varieties Amarullah, Amarullah; Indradewa, Didik; Yudono, Prapto; Sunarminto, Bambang Hendro
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1182.476 KB) | DOI: 10.22146/ipas.10706

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The correlation of major growth parameters with the yield of cassava in different growth phases was investigated in 2013 and 2014. This experiment was conducted to assess the effect of two cassava varieties and the different growth phases to the yield and yield components. In experiment, the varieties as treatment were arranged in a randomized complete block design (RCBD) with three replications. Two varieties consisted of superior Adira-4 and local varieties Singgah were used. The growth parameters (plant height, stem diameter, leaf number) and yield components (number of tuber, weight per tuber and tuber yield) in early growth phase, maximum vegetative growth phase and charging tuber phase, were observed. Based on the correlation results, the growth parameters and the yield highly affected to the final outcome of cassava tubers at different growth phases. In the early growth phase, occurs high demand to assimilate with the expense of storage root. However, from the maximum vegetative phase, growth parameters began to show a significant positive contribution to the tuber weight. Weight of fresh tuber in both varieties increased at the charging of tubers phase and thereafter (enlarged bulb). The early growth phase and maximum vegetative phase might not generate a significant contribution to the final yield of cassava tuber. Making those two periods were not suitable time for optimum harvesting result, and it still depended on the variety and its allocation.
An Evaluation of Suitable Landscape to Crop Food Cultivation By Using Neural Networks Azis, Anifudin; Sunarminto, Bambang Hendro; Renanti, Medhanita Dewi
IJCCS - Indonesian Journal of Computing and Cybernetics Systems Vol 1, No 1 (2006): IJCCS
Publisher : Indonesian Computer, Electronics, and Instrumentation Support Society (IndoCEISS)

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Penentuan jenis tanaman pangan yang sesuai ditanam pada lahan tertentu berdasarkan nilai-nilai karakteristik lahan sangat diperlukan sebagai pendukung pengambilan keputusan, koordinasi, dan pengendalian bagi para peneliti, praktisi, dan perencana penggunaan lahan, sehingga kerugian (finansial) yang cukup besar tidak terjadi nantinya. Program komputer dengan menggunakan Jaringan Syaraf Tiruan (JST) metode Learning Vector Quantization (LVQ) dapat digunakan sebagai alat yang tepat dalam memberikan informasi tanaman yang cocok ditanam dengan mudah, cepat, dan akurat. Data pelatihan didapat dari kombinasi nilai karakteristik lahan yang termasuk dalam kelas kesesuaian S1 dan S2. Hasil pengujian menunjukkan bahwa nilai Eps (error minimum yang diharapkan) = 0.005, nilai ?? ?? = 0.05, nilai maksimum epoh = 10, dan nilai pengurangan learning rate sebesar 0.1*?? ?? merupakan nilai-nilai yang cukup efektif dan efisien dalam melakukan prediksi jenis tanaman pangan yang sesuai ditanam pada lahan tertentu karena tingkat ketepatan prediksinya adalah 100%.
PERAN EDU-TAINMENT DALAM MEMBANGUN KOMITMEN DAN PERAN NYATA PADA GERAKAN JIHAD KEDAULATAN PANGAN Agus, Cahyono; Suhartanto, Bambang; Sunarminto, Bambang Hendro; Agus, Agus
Pertanian Tropik Vol 1, No 1 (2014)
Publisher : Pasca Sarjana FP USU

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Paradigma baru pertanian terpadu harus memberdayakan segenap multi-fungsi pertanian terpadu sebagai pemasok utama sandang, pangan, dan papan bagi kehidupan seluruh makluk hidup; juga sebagai gatra lingkungan hidup yang berkelanjutan, penyedia keindahan lingkungan (wisata-agro), penghasil bio-farmaka dan penghasil bio-energi.Gerakan “Jihad Kedaulatan Pangan” (JKP) dalam menumbuh kembangkan kecintaan dalam memproduksi sendiri dan menggunakan produk pangan unggulan lokal secara sungguh-sungguh, tanpa bergantung pada pangan impor lagi. Gerakan ini harus didukung secara sinergi, utuh, terpadu dann yata oleh seluruh pemangku kepentingan agar membentuk jaringan antar ABCG (Academic / akademisi, Business / pedagang swasta, Community / masyarakat, Government / pemerintah) yang erat dan nyata. Kedaulatan Pangan dapat digapai dengan mengaplikasikan konsep Pertanian Terpadu melalui strategi 5A (Agro-produksi, Agri-bisnis, Agro-industry, Agro-teknologi, Agro-wisata) yang memberdayakan seluruh potensi sumber daya alam, air, hayati, lingkungan, SDM dan manajemen secara menyeluruh, terpadu, utuh dan saling sinergis.Konsep ini harus terpadu dari hulu ke hilir untuk masing-masing komoditas unggulan utama sehingga mempunyai nilai tambah di bidang ekonomi, pelestarian lingkungan, sosial dan budaya secara sinergis.Indonesia mempunyai kemampuan, kemauan dan kesempatan untuk mencapai Kedaulatan Pangan, namun komitmen politik dan ekonomi harus dirorong lagi. Dengan perbaikan peraturan, kepemimpinan, pelaksanaan, SDM, teknologi, sinergisme, dan manajemen di seluruh lini 5A ini, maka diharapkan dapat memperbaiki kelemahan utama komoditas pertanian agar mampu memenuhi standart 3K (kuantitas, kualitas dan kontinyuitas) serta bersertifikat halalal thoyiban.Peran pers dan edu-tainment sangat penting untuk meningkatkan image building, kepercayaan, komitmen dan peran nyata seluruh stake holder untuk mendukung program unggulan mendukung Jihad Kedaulatan Pangan.
Tanggap Fisiologi dan Hasil Bawang Merah (Allium cepa L. Kelompok Aggregatum) terhadap Lengas Tanah dan Ketinggian Tempat Berbeda Anshar, Muhammad; Tohari, Tohari; Sunarminto, Bambang Hendro; Sulistyaningsih, Endang
Biota Biota Volume 18 Nomor 1 Tahun 2013
Publisher : PBI Yogyakarta

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Percobaan di rumah kaca telah dilaksanakan di provinsi DIY pada bulan Maret-Juni 2009. Percobaan bertujuan mengkaji tanggap fisiologis dan hasil bawang merah terhadap kondisi lengas tanah berbeda pada ketinggian tempat berbeda. Penelitian disusun berdasarkan percobaan lokasi dalam Rancangan Petak Petak Terbagi (Split Split Plot Design) diulang tiga kali. Petak utama adalah lokasi dengan ketinggian tempat berbeda di atas permukaan laut (dpl.) terdiri atas: (1) 100 m dpl., (2) 400 m dpl., dan (3) 800 m dpl.; Sub-plot adalah varietas bawang merah terdiri atas: (1) ‘Palu’, (2) ‘Palasa’, dan (3) ‘Sumenep’. Sub-sub-plot adalah lengas tanah dalam persentase kapasitas lapangan (% KL) terdiri atas: (1) 50% KL, (2) 100% KL, dan (3) 150% KL (kondisi jenuh). Lokasi dengan ketinggian tempat berbeda memberikan tanggap fisiologi dan hasil bawang merah yang berbeda. Varietas Palu memiliki aktivitas fotosintesis lebih besar pada semua kondisi lingkungan berbeda dan lebih tahan terhadap cekaman kekurangan dan kelebihan lengas tanah terutama di dataran rendah. Lengas tanah 100% KL menghasilkan aktivitas fisiologi dan hasil umbi kering panen lebih tinggi, sebaliknya lengas tanah 50% KL dan 150% KL menurunkan pertumbuhan dan hasil bawang merah varietas Palasa, Palu dan Sumenep pada semua ketinggian tempat.Kata kunci: bawang merah, ketinggian tempat, lengas tanah, fisiologi
KAJIAN PEMETAAN LAHAN PERTANIAN PANGAN BERKELANJUTAN (LP2B) DI KABUPATEN PURWOREJO Sakti, Melulosa Andhytya; Sunarminto, Bambang Hendro; Maas, Azwar; Indradewa, Didik; Kertonegoro, Bambang Djadmo
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 10, No 1 (2013)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v10i1.141

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Implementasi Undang-Undang 41 Tahun 2009 tentang lahan pertanian pangan berkelanjutan masih perlu untuk ditingkatkan. Kabupaten Purworejo memiliki luas total 103.481,75 ha yang tediri dari sawah,lahan kering dan kebun campur. Peningkatan pembangunan yang cukup tinggi menyebabkan Kabupaten Purworejo rawan terjadi alih fungsi lahan terutama lahan pertanian ke non pertanian. Penentuan lahan pertanian pangan berkelanjutan diharapkan dapat mengendalikan laju alih fungsi tersebut. Penelitian ini bertujuan untuk menentukan parameter untuk memetakan LP2B dan LCP2B, menentukan dasar perhitungan untuk menilai antar parameter LP2B dan LCP2B, menentukan kriteria pengelompokan karakteristik lahan pertanian pangan sebagai LP2B dan LCP2B dan memetakan lahan pertanian pangan berkelanjutan (LP2B) Kabupaten Purworejo. Data yang digunakan dalam penelitian ini meliputi data spasial dan data tabulasi Data spasial terdiri dari Peta Present landuse hasil interpretasi citra satelit resolusi tinggi kabupaten purworejo skala 1:25.000, peta topografi, peta kesesuaian lahan, peta batas administrasi kecamatan, dan peta lahan baku sawah. Data tabulasi terdiri dari kebutuhan dan ketersediaan pangan, neraca bahan pangan, alih fungsi lahan sawah, laju pertumbuhan penduduk, dan kebutuhan luas lahan. Hasil penelitian diketahui bahwa jumlah penduduk, produksi lahan sawah, luas tanam, luas panen, laju alih fungsi dan neraca bahan makanan dapat digunakan sebagai parameter untuk menentukan LP2B sedangkan kriteria pengelompokan lahan didasarkan pada sistem irigasi dan produkstivitas lebih dari 5,5 ton/ha dengan IP lebih dari 1,75. Berdasarkan hasil analisis kabupaten Purworejo memiliki total luas kawasan pertanian pangan seluas 38.562 ha yang terdiri dari 27.850,18 ha lahan basah dan 10.712 ha lahan kering. Dari luas tersebut yang menjadi LP2B basah seluas 25.826 ha dan LP2B kering 5.243 ha. Lahan cadangan pertanian pangan berkelanjutan basah (LCP2B basah) 2.024 ha dan cadangan pertanian pangan berkelanjutan kering (LCP2B kering) 5.469 ha.
ALIRAN BAHAN ORGANIK PADA SAWAH PADI ORGANIK DI DUSUN JAYAN DESA KEBONAGUNG KEC. IMOGIRI KAB. BANTUL D.I. YOGYAKARTA Anshori, Arif; Sunarminto, Bambang Hendro; Haryono, Eko
Caraka Tani: Journal of Sustainable Agriculture Vol 31, No 1 (2016): March
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v31i1.11942

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Organic farming uses natural resources to improve the health and productivity of soil and plants. Nutrients are lost or transported through crops, erosion, leaching and volatilization must be replaced naturally and through the return of organic matter. This research aims to study the conditions of organic rice fields, specifically in terms of organic matter flow, in Jayan Kebonagung Imogiri Bantul. The organic rice field data obtained from interviews and archive farmers. The results indicate that the organic rice field in Jayan under a transition from conventional to organic rice field. Dose of organic fertilizer 10 tons/ha were given during the transition period. Organic fertilizer 5-10 tons/ha have been giving during the organic rice fields. Returns organic matter to agricultural land through land-crop-land, land-plant-livestock-land and land-crop-livestock-biogas-land. Manure, weeds and paddy field plants, crop waste, waste from agricultural products processing and non-agricultural organic wastes involved in the flow of organic matter. Farmers monitor the health and productivity of soil and plants as the basis in the management of organic rice field.
Effect of Acetic Acid as Pre-Emergence Herbicide on Maize Germination Pujisiswanto, Hidayat; Yudono, Prapto; Sulistyaningsih, Endang; Sunarminto, Bambang Hendro
Jurnal Penelitian Pertanian Terapan Vol 15, No 1 (2015)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v15i1.113

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Profitable crop production starts with a weed control program that includes pre-emergence herbicides to deliver long-lasting, residual weed control. Pre-emergence herbicides are applied to prevent the germination of weed seeds. The study was conducted to determine the effect of acetic acid as a pre-emergence herbicide on maize germination. Pots experiment was conducted on August until September 2012. The experimental design used was Completely Randomized Design (CRD) single factor in four replicates. The application of pre-emergence acetic acid at several concentration, i.e. control (no acetic acid) 0%, 10% acetic acid and 20% acetic acid. The result showed that the pre-emergence aplication at 10% and 20% of the glacial acetic acid solution lowered pH were 5,12 and 5,43 respectively at one week after application, so that inhibited maize germination. No shoots and roots were grew. This was due to the increase of electrical conductivity (EC) or electrolyte leakage caused by the high permeability of the damaged membrane of seed. The EC of control treatment was 11μS/cm g, compared to 10 and 20% treatment of acetic acid were 36 μS / cm g and 55 μS / cm g EC respectively. Increasing concentration of acetic acid caused the higher of protein content leaked, i.e. 7,95%, 7,32% and 7,03% respectively for without acetic acid treatment, 10% and 20% acetic acid. Acetic acid also inhibited respiration rate of maize seed, where the higher concentration of acetic acid produced the lower respiration rate, i.e. 31.63 mg/g/hour, 12.38 mg/g/hour and 2,75 mg/g/hour respectively for without acetic acid treatment, 10% and 20% acetic acid. Keywords : Acetic Acid, Maize (Zea mays L.), Germination, Pre-Emergence Herbicide
PENGARUH INOKULASI JAMUR MIKORIZA ARBUSKULA TERHADAP GLOMALIN, PERTUMBUHAN DAN HASIL PADI Syamsiyah, Jauhari; Sunarminto, Bambang Hendro; Hanudin, Eko; Widada, Jaka
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 11, No 1 (2014)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v11i1.214

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Penelitian pot ini bertujuan untuk mengukur kandungan glomalin,  pertumbuhan dan hasil tanaman padi dari inokulalsi mikoriza. Penelitian disusun dengan Rancangan Acak Lengkap dari empat perlakuan yaitu dua taraf sterilisasi (TO, tanpa sterilisasi dan TS, + sterilisasi) dan dua taraf inokulasi mikoriza (M1, - mikoriza dan M1+ mkorisa) dengan enam kali ulangan. Mikoriza sebanyak 5 g/pot diberikan sebelum penamanan benih padi. Hasil penelitian menunjukkan bahwa Glomalin Total (GT) dan Glomalin mudah diekstrak (GEE) lebih tinggi pada inokulasi mikoriza, masing-masing meningkat 16 % dan 20% pada tanah tidak steril (TOM1) dan  25 % dan 11 %  pada tanah steril(TSM1) dibandingkan tanpa mikoriza. Kandungan GT berkisar dari 4,95 – 9,74 mg/ g tanah dan GEE 0,99 – 2,78 mg/g tanah. Inokulasi mikoriza meningkatkan C organik tanah, sebesar 13,47 %  pada tanah tak steril dan 12,93 % pada tanah steril. Tinggi tanaman, jumlah anakan dan berat gabah kering giling (GKG) nyata dipengaruhi inokulasi mikoriza. GKG pada tanah steril+ mikoriza paling tinggi (20,68 g/pot) namun tidak berbeda nyata dengan  tanah tak steril + mikoriza. Sterilisasi tanah nyata tidak mempengaruhi produksi glomalin, pertumbuhan dan hasil tanaman padi.
PERTUMBUHAN DAN HASIL DUA KULTIVAR PADI DAN BERBAGAI JARAK TANAM PADA SISTEM PENGAIRAN GENANGAN DALAM PARIT Syamsuddin, Syamsuddin; Indradewa, Didik; Sunarminto, Bambang Hendro; Yudono, Prapto
AGROLAND Vol 18, No 3 (2011)
Publisher : AGROLAND

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The experiment was conducted on the Technical Irrigated Rice Field in D.I. Yogyakarta with soil type is Regosol. The study took place in July to December 2010. The research aim was to obtain agronomic characters and optimal planting distance that could increase the productivity of land with furrow irrigation system (FIS). The research used a factorial design (2 x 4+2) with 3 replications. Factor 1 was cultivars (K): K1 (Cimelati) and K2 (Sarinah). Factor 2 was planting distances (J): J1 (20 x 20 cm), J2(20 x 15 : 40 cm; legowo 2:1), J3(20 x 12,5 : 40 cm; legowo 2:1), and J4(20 x 12,5 : 45 cm; legowo 2:1). Controls were Cimelati and Sarinah cultivars grown in wetland rice field. The experimental results showed that the ability of plants to form seedlings in FIS was better than in the rice fields. The ability of plants to form seedlings in FIS at different planting distances was similar. Net assimilation rate (NAR) and relative growth rate (RGR) in the wetland system was better than FIS, but the leaf area index (LAI) and crop growth rate (CGR) was better in FIS. The NAR, RGR, and CGR in both systems were similar. Larger panicle and grain panicle number, 1000 grain weight and percentage of filled grain rice were found in FIS than in the rice field. The growth of rice in FIS was not affected by differences in both cultivars and planting distance. Dry harvested grain weight in FIS was lower than in the rice field. Dry harvested grain weight of Cimelati cultivar (8.04 t/ha) in FIS with planting distance of 20 x 12,5 : 40 cm (legowo 2:1) was comparable with that in the rice field (8.05 t/ha).